i - r 
Ee 
DIPTERA, 347 
feelers pitehy : dish of the under side of the abdomen dull testaceous with a 
black stripe ; legs black: wings gray ; veins black ; prebrachial vein form- 
ing a gentle outward curve beyond its flexure, very slightly inclined inward 
near its tip which is very near the tip of the cubital vein ; lower cross-vein 
almost straight, but with indications of the two usual curves: alule whitish 
with yellowish borders. Length of the body 34 lines; of the wings 8 lines 
Senegal? 
Mosca BAsatts. 
Cyaneo-viridis ; caput argenteum, antice ferrugineum ; thorax antice canus ; 
abdomen subtus fusco bivittatum; antenne ferruginee, basi fulve ; 
pedes nigri ; ale subcineree. 
Bluish-green : head adorned with a silvery white covering, ferruginous in 
front; epistoma not prominent: mouth black ; palpi luteous : feelers tawny ; 
third joint ferruginous, full twice the length of the second, almost reaching 
the epistoma; sith joint black, tawny at the base : front of the chest with 
a hoary tinge: under side of the abdomen with two brown stripes on the 
disk: legs black: wings pale gray; veins black, tawny at the base; pra- 
brachial vein forming a very gentle curve at its flexure, almost straight 
from thence to the tip; lower cross-vein with two slight curves: alule 
white. Length of the body 3} lines; of the wings 8 lines, 
Jamaica. 
Mosca occipentis, Fem. 
Cyaneo-viridis ; scutum postice purpureo varium ; scutellum et abdomen 
viridi-cyanea ; antenne et pedes nigra; ale subcinerea. 
Bluish-green: head with a white stripe on each side in front along 
the eye; frontalia, palpi and feelers black: hind part of the shield tinged 
with purple : scutcheon and abdomen greenish-blue : legs black: wings very 
slightly gray ; veins black, tawny at the base ; prebrachial vein forming a 
gentle curve at its flexure, very slightly bent inward near the tip ; lower 
cross-vein slightly bent inward in the middle: alule white : halteres yellow. 
Length of the body 3% lines ; of the wings 7 lines. 
United States. 
